Potential energy is often associated with restoring forces such as a spring or the force of gravity. The action of stretching the spring or lifting the mass is performed by an external force that works against the force field of the potential.

In physics, potential energy is the energy of an object or a system due to the position of the body or the arrangement of the particles of the system.

Pages on this website showing  potential energy are:

Pumped Hydro

Rail Storage  

Compressed air